Math · Age 11 · Geometry
Angle Sums in Triangles & Quadrilaterals (Ex. 1)
Use angle sums in triangles (180°) and quadrilaterals (360°) to find unknown angles.
Module
Geometry
Age
Age 11
Duration
10 min
Questions
5
What's in this exercise
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Question 1
Multiple choice
The sum of angles in a triangle is…
Question 2
Multiple choice
A triangle has angles 65° and 75°. What is the third angle?
Question 3
Multiple choice
The sum of angles in a quadrilateral is…
Question 4
Sequence
Triangle angles: 48°, 67°, x. x = 180 − 48 − ____ = 65°.
Question 5
True or false
An equilateral triangle has each angle equal to 60°.